49778985 has 8 divisors (see below), whose sum is σ = 79646400. Its totient is φ = 26548784.

The previous prime is 49778983. The next prime is 49778987. The reversal of 49778985 is 58987794.

It is an interprime number because it is at equal distance from previous prime (49778983) and next prime (49778987).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 49778985 - 2¹ = 49778983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49778983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1659285 + ... + 1659314.

It is an arithmetic number, because the mean of its divisors is an integer number (9955800).

Almost surely, 2^49778985 is an apocalyptic number.

It is an amenable number.

49778985 is a deficient number, since it is larger than the sum of its proper divisors (29867415).

49778985 is a wasteful number, since it uses less digits than its factorization.

49778985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3318607.

The product of its digits is 5080320, while the sum is 57.

The square root of 49778985 is about 7055.4223828202. The cubic root of 49778985 is about 367.8595306076.

The spelling of 49778985 in words is "forty-nine million, seven hundred seventy-eight thousand, nine hundred eighty-five".